000003993 001__ 3993
000003993 005__ 20141118153339.0
000003993 04107 $$acze
000003993 046__ $$k2009-05-11
000003993 100__ $$aVeselý, V.
000003993 24500 $$aDevelopment of fracture process zone in quasi-brittle bodies during failure

000003993 24630 $$n15.$$pEngineering Mechanics 2009
000003993 260__ $$bInstitute of Theoretical and Applied Mechanics AS CR, v.v.i., Prague
000003993 506__ $$arestricted
000003993 520__ $$2eng$$aThe paper introduces a methodology for an estimation of the size and shape of a fracture process zone evolving at the macroscopic crack tip in quasibrittle materials during their tensile failure. The procedure is based on a general description of the stress field in cracked bodies done by Williams’ power series in combination with the philosophy and selected features of classical non-linear fracture models for concrete, i.e. the equivalent elastic crack models and the cohesive crack models. The proposed procedure incorporated in existing methods for the fracture parameters determination is supposed to eliminate or substantially decrease the effect of the test specimen size and geometry (the effect of the specimen’s free boundaries) on the determined values of fracture characteristics of quasi-brittle materials, from which the existing methods considerably suffer. The estimation of the fracture process zone development during the fracture is illustrated on numerically simulated fracture tests on three-point bending of notched beams.

000003993 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000003993 653__ $$a

000003993 7112_ $$aEngineering Mechanics 2009$$cSvratka (CZ)$$d2009-05-11 / 2009-05-14$$gEM2009
000003993 720__ $$aVeselý, V.$$iFrantík, P.
000003993 8560_ $$ffischerc@itam.cas.cz
000003993 8564_ $$s267248$$uhttps://invenio.itam.cas.cz/record/3993/files/Vesely-101-PT.pdf$$y
             Original version of the author's contribution as presented on CD, 101.
            
000003993 962__ $$r3852
000003993 980__ $$aPAPER